GP is saying that calling the prisoners "workers" is incorrect, and that it is more accurate to refer to them as "slaves". Honestly, I'd tend to agree. There's

GP is saying that calling the prisoners "workers" is incorrect, and that it is more accurate to refer to them as "slaves". Honestly, I'd tend to agree. There's even a little exception in the 13th Amendment specifically for this: "Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction" They're slaves.